Sheet metal reinforcing jacket for lead pipes



Dec. 5, 1939. ELSBY ET AL 2,182,552

SHEET METAL REINFORCING JACKET FOR LEAD PIPES Filed Feb. 5, 1938 T T L v I 18 u 4 T? u :1: RI E i 7 I I INVENTORS.

VhLEIsh d [ass Kahshe BY 5 f r/ TORI??? Patented Dec. 5, 1939 UNETEE S'l'A'i'E SHEET METAL REINFORCING JACKET FOR LEAD PIPES William Elsby and Casey Kalishe, Milwaukee, Wis., assignors to Crown Metal Company, Inc.,

Milwaukee, Wis.

Application February 5, 1938, Serial No. 188,859

1 Claim.

This invention appertains to lead pipe lines and the like, and more particularly to chemical lead pipe utilized for conveying chemical-laden fluids.

In view of the fact that lead pipe resists the corrosive action of most chemicals, the same is used extensively in industrial plants. The use thereof is open to objection, however, in view of the fact that the same lacks the rigidity of steel or iron, and thus the lead pipe tends to sag and creep.

It is, therefore, one of the primary objects of our invention to provide means for cooperation with lead pipe of ordinary construction to prevent the creeping and sagging thereof.

Another salient object of our invention is to provide means for preventing the sagging of lead pipe lines, which can be placed on pipe lines already installed and in use.

A further important object of our invention is to provide a sheet metal casing for snugly engaging lead pipe lines having one or more longitudinally extending ribs or fins, which in conjunction with the casing act as reinforcement for the lead pipe to prevent sagging of the pipe.

A still further object of our invention is to provide novel means for uniting sections of the casing together, whereby to add further rigidity to the pipe, and to strengthen the joint between the sections.

With these and other objects in view, the invention consists in. the novel construction, arrangement, and formation of parts, as will be hereinafter more specifically described, claimed, and illustrated in the accompanying drawing, in which drawing:

Figure l is a fragmentary side elevation of a lead pipe line, showing our invention incorporated therewith.

Figure 2 is a detail transverse section taken on the line 2-2 of Figure 1, looking in the direction of the arrows.

Figure 3 is a detail, transverse sectional View taken on the line 33 of Figure 1, looking in the direction of the arrows.

Referring to the drawing in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter L generally indicates a lead pipe line, which, as shown, in ludes a vertical length 5, a horizontal length E5, and a connecting elbow l.

The pipe line L, as described above, is of the ordinary construction and arrangement, and the meeting ends of the horizontal section 6, the vertical section 5, and the elbow l are provided with mating flanges 3. These flanges 8 are adapted to be held in firm contact by the use of annular clamp rings 9, which can be formed from iron or the like. These rings engage about the outer faces of the flanges 8 and are firmly united by adjustable bolts.

In accordance with our invention, we provide a sheet metal casing or housing II for the horizontal branch 6 to prevent the sagging and creeping thereof. This casing or housing ll includes a plurality of sections l2 and I3. Each section is preferably formed from a single sheet of metal folded longitudinally to provide a substantially cylindrical body it. The longitudinal edges of the body have formed thereon radially extending longitudinally disposed ribs or fins l5. These ribs or fins it: are connected together by a series of bolts Hi.

In applying the housing or casing H to the horizontal length of lead pipe 6, the ribs or fins are spread apart so that the sections l2 and I3 can be slipped over the pipe, and the sections are adjusted so that the meeting ends willtightly engage one another. The ends of the sections adjacent the joints of the lead pipe are slid under the adjacent rings 9, and these rings tend to hold the sections in place. As illustrated, the ribs or fins iii are cut away adjacent the rings so that the housing or casing can be easily slipped under the rings.

After the sections of the casing or housing it are disposed in proper position, the bolts It are then employed for connecting the ribs and fins together. Where the sections 12 and i3 abut, we utilize a connecting sleeve l1. formed similar to the sections [2 and I3 and is placed over the meeting ends of the sections, and the ribs I8 of the sleeve are secured to the ribs of the sections by the bolts H5.

The casing or housing is held in snug contact with the pipe line, and the casing or housing with the longitudinally extending ribs forms an adequate means for reinforcing the pipe to prevent the sagging thereof.

If desired, the vertical length of lead pipe 5 can. be encased in a similar housing or casing It. This casing or housing i9 is formed in companion semicircular halves 2B, and the longitudinal edges of the halves have formed thereon outwardly extending ribs or flanges 21, which are firmly connected by bolts 22. The housing 26 with the ribs 2| add the desired rigidity to the vertical branch and effectively prevent swaying of this branch.

Changes in details may be made without departing from the spirit or the scope of our invention, but what we claim as new is:

A reinforcing stiffener for preformed pipe of lead or like non-corrosive material, said stiffener comprising a relatively thin bendable metallic sheet drawn about said pipe, as a core, to radially confine and brace the same, the included pipecore reacting on said embracing sheet to sustain the latter against buckling, whereby said pipe and sheet coact to form a unit highly resistant to bending.

WILLIAM ELSBY.

CASEY KALISI-IE.

This sleeve is 7 

